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10 Cards in this Set
- Front
- Back
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Describe the APU?
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Constant speed
Single stage impeller Independent oil system |
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What controls the APU?
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A dedicated FADEC
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What battery is used for APU start?
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BATT 2 powers the starter
BATT 1 powers the FADEC and EICAS for monitoring |
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What is the fuel source for the APU?
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Right tank
Left tank through crossfeed valve |
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What fuel pump is used for APU start?
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Batteries on: DC fuel pump
AC power avail: AC Pump 2 Right engine running: Ejector pump |
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What does moving the APU switch to OFF do?
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Initiates normal APU shutdown
1 minute cool down No pneumatics (electrics for 1 minute) |
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Can the APU shutdown be cancelled?
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Yes, by moving the START switch back to ON before the 1 minute cool down is over
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How is the APU shut down immediately?
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APU EMER STOP button
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What will happen if the batteries are turned off during the 1 minute cool down?
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APU will shut down immediately
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When will the APU shut down automatically
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Ground & Flight:
Overspeed Underspeed FADEC critcal fault Ground only: Fire Overheat Low oil pressure |
